Disk sound record



Jan. 15, 1924. 1,480,980

l.. P. BARLOW DISK SOUND RECORD Filed Aug. 19, 1918 etented Jan. i5,1924.

een

nassen n. aw, or new VEN, CONNECTICUT,

dem@

EDMONJDS, F NEW YORK, N. Y.

3315K SUND RECRD,

Application med August R9, Serial No. @$9,652.

To all whom it may corncem:

Be it known that l, LESTER P. BARLow, a citizen of the United States,residing at New Haven, in the county of New Haven e and State ofConnecticut, have invented certain new and useful Improvements in DiskSound Records, of which the following 1s a specification.

My invention relates to sound-records of i@ the disk type, bearingrecord-groovesof any known character. At resent it is common tomanufacture and sel disk records bearing musical or other selections ontheE two Jfaces thereof and it often happens that a is purchaser of suchrecords wishes to obtain a selection on one side of the disk and doesnot care for the selection on the other side. There are, however,various considerations which make double-disk records preferable 2o fromthe manuacturin and selling standoints over disks bearing records on oneace only. The chief object of :my present invention is to make ispossible forsalesagents to keep in stock comparatively thin disk recordsbearing selections on one face of each of the same only, from which thecustomer may make his selections, after which pairs of such singlerecords may very readily and simply be secured to ether so to formdouble records, each of whic carries sound-records which are entirely ofthe choice of the customer. Such double records may be of approximatelythe same thickness as the double records now sold, se and may be usedfor reproducing the selections thereon as effectively as are the presentdouble disk records.

l accomplish this object by securing the single record-bearing diskstogether prefee erably with a thin layer of filling material interposedbetween the non-record-bearing faces, the disks bein readily secured infirm relation to each ot er by various means, such as metallic stripscrimped about the peso ripheral edges, or sleevelike pieces extendingthrough the central openings of the disks and crimped or riveted overthe faces of the disks, or by adhesive material interposed between thedisks, or by all of these sa means together, or by other similar means.

Other objects will appear hereinafter.

In order that my invention may be more clearl understood, attention ishereb directe to the accompanying drawings, orming part of thisapplication and illustratincertain embodiments of my invention.

n the drawings, Figure l represents a vertical cross-section through apair of single disks during the process of securing the same together;Figure 2 is a similar section, showing the disks secured firmlytogether; Figure 3 is a top lan view, partly broken away, of the doubedisk shown in Figure 2; and Figure 4 is an enlarged artial section,similar to that shown in `ig `ure 2 but illustrating a modification.Referring to the drawings, a pair of disk records are shown at 1 and 2,each of which bears a suitable sound-record on its outer face l or 2.The inner or opposite faces of thedisks may be plain or may be formedwith etched or molded lines, or with depressions and projections ofvarious kinds, in order to overcome shrinkage stresses in the recordmaterial.' rlhe disks may be formed of any suitable record-formingcomposition, and are preferably comparatively thin, so that preferablythe completed double record will be of about the same thickness as thepresent double records.

When the disks 1 and 2, desired to form a single double-disk unit, havebeen selected, they are placed together by the salesman, with therecord-bearing faces outermost and preferably with a thin layer offilling material, 3, which may be cut to disk form, interposed betweenthe same. This filling material may be a sheet of paper or fiber or thelike, coated with or impregnated with adhesive or cementitious material,which may be used for bindin the two single records firmly together. uchcementitious or adhesive material will, of course, va with the characterof the material of whih the records'are formed, but is preferably ofsuch a character that a simple moistening of the sheet 3 will besuiicient to cause the same to adhere firmly to the disks 1 and 2 whenthe latter are pressed together. lf desired` the interposed disk 3 maybe formed with projections or depressions adapted to coact withcorresponding depressions or projections which'may be formed in theinner faces of the two record-disks 1 and 2, in order to guard moresurely against relative rotation between the disks when they have beenassembled into a unit. In some cases, also, it may be found suliicientto IGHOR T@ SUEL OWEN 1 inter a layer of material such as 3, whiccarries no adhesive material at all,

this being merely for the sake of preventing vibration or rattlingbetween the two disks of a unit, the bindm together of the two beingaccomplis edentirely by other means, such as the edge-clampin means.Also, in some cases, it may be foun that an interposed disk of anycharacter is unnecessary, the two sin le. disks of a unit being providedwith esive material upon their Yinner faces, such that the two dlsks maybe secured together by this interposed adhesive to prevent rattling ofthe same during the reproduction of the record. In general, however, inview of the lusual inequalities of the surfaces of therecords, I

vconsider it preferable to interpose a layer of yielding materialbetween the two disks, as stated. It is, ofcourse, unnecessary to givethe faces of the single records any smooth or leasing finish, sincethese surfaces will Ee covered up in the complete double records.

The records may be secured together by an edge-clip 4, which ispreferably formed of thin sheet-metal and which may be kept in quantityin the sales-rooms in which the records are sold, properly formed to fitaround the double records to be assembled. In order that` such use ofmetal may not affect the reproduction of the record, a washer 5 of feltor other similar material may be interposed between the eds of therecords and the metal strip 4. e single records are also referablyfurther held together by means o thin sleeve-pieces 6 formed of thinsheet-metal, which may be inserted in the central openin of the disks tosurround the spindle on which the record is to be placed on theturntable of the reproducing machine. If sleeves 6 are used, the axialopenings of the records must, of course, be made su-iii'- ciently largeto accommodate the same. If desired, a washer 7 of felt or the like maybe interposed between the metallic sleevepiece 6 and the material of thetwo disk records;

Having mounted the parts in the position shown in Figure 1, it is merelynecessary to press down or crimp over the edges of the periheralbinding-stri 4 and t e central bin ng-sleeve 6 into t e positionshown in F' re 2, in order to clamp the single recor firmly together.This may readily and uickly be accomplished by various means orming nopart of the present invention.

When the double record is thus formed, the edge and central metallicianges may extend slightly over the planes of the record-bearingsurfaces, as is indicated in Figure 2. While this slightly increases thelateral space taken by the record in a filing cabinet or the like, anadvantage is to be noted, namely, that composite records thus formed maywith metal surfaces only in contact, so that the record surfaces areprotected against being scratched, when piled one upon the other, orwhen slid over a table, or the like. Such protection of the recordsurfaces constitutes one of the features of my invention, which is notlimited to the type of record previously described. Disk records ofvarious characters, such as are now made, having sound-records on one orboth faces thereof, may have the record surfaces pro tected againstmarring or scratching by having the marginal surfaces and the surfacesimmediately surroundin the central opening raised somewhat aove theplane or lanes in 'which the record grooves are ormed. This may beaccomplished by viding the disks with members of metall-:r othermaterial such as are shown at 4 and 6 in Fig. 2, with slightly roundededges, the washers 5Y and 7 also preferabl being used, if members 4 and6 are of meta Or 1t may be accomplished by so molding or formin therecor s as to accomplish the same resu t without the use of addedmembers such as 4 or 6; that is to sa the record-bearing surfaces may beslight y countersunk, or circular iianges such as those shown at 41 and61 in Fig. 2 otherwise provided of the same material as that of the bodyof the disk, in order to protect the record surfaces. The outer faces ofthe raised portions adjacent the periphery and adjacent the centralopening should, of course, be in substantially the same plane, to form abase on which the disk rests.

As a modification, however, in case itis be placed one upon the other"deemed desirable to keep the thickness of the double records to as smallan amount `as is possible, the construction illustrated in Figure 4 maybe used, in which the ed es ofthe peripheral binding-strips v4 and t ewashers 5 are pr into recesses which ma be formed on the outer faces ofthe recor adjacent t0 the edges-thereof, the central sleeve 6 and washer7 being correspondingly pressed into similar recesses surrounding thecentral opening of the record.

Having now described m invention, what I claim as new therein an desireto secure by Letters Patent is 1. As a new article of manufacture, asound record comprisin two separate competl relatively thin dis sconnected back to 2. As a new article of manufacture, a

sound record comprising two thin disks each of which alone would be toothin to stand ordinary practical handling, each disk having a soundreproduction upon one side of a predetermined selection, said disksbeing attached back to back so as to forma combination record.

3. As a new article of manufacture, a

double sound-record comprisin a pair of disks each having a sound-recorformed on one face thereof, arranged in parallel relation with therecord-bearing faces outermost, a thin layer of filling material betweensaid disks, adapted to prevent rattling of one disk against the otherduring reproduction, and means for securing sald disks ixedly together,said disks being of usual sound-record material and considerably thinnerthan ordinary rigid commercial sound-record disks, so that they wouldnot be adapted to render an effective reproduction with full volume, ifused alone and unsecured to a base.

4. As a new article of manufacture, a double sound-record comprising apair of thin disks each having a sound-record formed on one facethereof, arranged in parallel relation with the record-bearin facesoutermost, and means for securing sai disks fixedly together, said disksbeing of usual sound-record material and considerably thinner thanordinary rigid commercial sound-record disks, so that they would not beadapted to render an effective reproduction with full volume, if usedalone and unsecured to a base.

This specification signed and witnessed

